The search giant leaked the app, called Keep, on Google Drive on Sunday, then took it down after about 30 minutes, according to multiple reports.

According to a report from Android Police—which originally discovered the source code for the service and noticed that the desktop version of the app went live on Sunday—Keep resembles Notebook, a Google product that was shut down in 2009. The app allowed users to save and organize information online.

Evernote, which boasts 50 million users, is one of the leading note-taking apps available, enabling users to save text, images and web content in the same document. It also lets them sync their saved docs across mobile and desktop platforms.